Metallic packing.



e. D. ROLLINS. METALLIC PAOKINGI APPLIGATION I'ILEDOGT.12. 1907.

WITNESSES {NVENTOR ATTORNEY PATENTED JULY 28, 1908.

GEORGE D. ROLLINS, OF PHILADELPHIA, PENNSYLVANIA.

METALLIC PACKING.

Specification of Letters Patent.

Patented July 28, 1908.

Application filed October 12, 1907. Serial N 0. 397,124.

To all whom it may concern:

Be it known that I, GEORGE D. RoLLiNs, a citizen of the United States,residing at Philadelphia, county of Philadelphia, and State ofPennsylvania, have invented a certain new and useful Improvement inMetallic Packing, of which the following is a specification.

My invention relates to a new and useful improvement in metallicpacking, and has for its object to so construct such a packing that itwill be especially adapted for the piston and valve rods of locomotivesand the ike and provide for the application of the packing to thecylinder or steam-chest of a locomotive, the split casing being entirelyinclosed within an outer casing, and further to thoroughly oil thepiston or valve rod and prevent the passage of dust or grit to the ringsof the packingv With these ends in view, this invention consists in thedetails of construction and combination of elements hereinafter setforth and then specifically designated by the claims.

In order that those skilled in the art to which this invention appertamsmay understand how to make and use the same, I will describe itsconstruction in detail, referring by letter to the accompanying drawingforming a part of this specification, in which- Figure 1 is a section ofmy improved packing. Fig. 2, an end view thereof looking outward,showing it applied to a cylinder or steam chest.

In carrying out my invention as here embodied, A represents the innercasing, which is made in two sections and secured together by suitablescrews, and this casing has grooves formed therein for the reception ofthe packing rings B and also for the supporting or guiding ring 0.

D represents the outer casing which is made in two sections and securedtogether by the screws E, and this outer casing has formed therewith anelongated head or flange D, through which the holes F pass for thereception of the stud bolts G, by which the outer casing is secured inplace against the face of the cylinder orsteam chest, indicated at H.

The object in making both the inner and outer casing in sections is tofacilitate placing them in position around the piston 01 valve stem rodindicated at I and avoiding the necessity of having to disconnect theserods from their cross-heads for this purpose, which would otherwise benecessary if either or both of the cases were made in one piece.

In the front face of the outer casing is formed a recess, and in thisrecess is located the two washer disks K, through each of which passesthe rod I with a running fit, and between these two disks is located afibrous packing L, such as waste or the like, and these disks andpacking are held in place by a plate M, which is let in flush with theouter face of the casing and held in place by suitable screws. Asuitable oil cup the shank of Which is indicated at N leads to thefibrous packing L, thus'aflording means f lubricating the valve in itsto and fro movements and excluding dust or grit from the packing rings3.

From the foregoing description it will be seen that my pac ing may bereadily applied to a piston or valve rod by simply removing the ordinarystufling boX, placing the inner casing around the rod, securing itssections toget er and then inclosing this inner casing with the outercasing, and in turn securing the sections of the latter together, andfinallyforcing the outer casing tightly against theface of the steamchest or cylinder by screwing up the nuts on the stud bolts G. Anysuitable packing may be used between the meeting edges of the outer andinner casidng and the face of the steam chest or cylin- While I havedescribed a split inner and outer casing, it is obvious that thesecasings may be made without being split.

Having thus fully described my invention, what I claim as new anduseful, is

1. A metallic packing for locomotives and the like consisting of a splitcasing having recesses formed therein for the reception of packingrings, and an outer split casing adapted to fit around and inclose theinner casing and hold the same in place and pack it against the escapeof steam, as specified.

2. In a metallic packing, the combination of an inner split casinghaving recesses formed therein for the reception of packing rings, anouter casing also made in two sections, said sections being securedtogether around the inner casing, a flange formed with the outer casingand stud bolts passed through holes in said flange for securing theouter casing in place.

3. Ametallic packing for locomotives and In testimony whereof, I havehereunto the like conslstlng of a caslng having reaffiXed my signature1n the presence of two cesses formed therein for the reception ofsubscribing Witnesses.

' packing rings and an outer casing adapted to GEORGE D. ROLLINS. 5 fitaround and inclose the inner casing and Witnesses:

hold the same in place and pack it against S. M. GALLAGHER,

the escape of steam, as specified. E. N. SOHQFIELD.

